If I want to create a circular flight route in FS9 (for example my start and end point is airport A with stop offs at airports B,C,D and E) do I have to create each part of the route as a seperate flight plan in the FS9 Flight Planner or is there a way creating just one flight plan?

Seperate flight plans, though you could add the airports as waypoints and then when you are close to them, request a touch-and-go. The only thing I am not sure of is having the departing airport the same as the destination airport.Hope this helps,JimActiveSky Support

If you're flying IFR, you will have to create each leg as a separate flight plan, it's like that in the real world too. For VFR, you can just use the other airports as waypoints and land at them. I've done that a few times.There is a way to create a flight plan with the departure and destination the same airport. I haven't found a way to do it in the flight planner though. I did this once, but haven't done it again.What you do is create your flight plan as you normally would, but make the destination an airport near your departure airport. You then need to edit the .pln file and change the last waypoint to the same as the departure.I've created flight plans before selecting the same airport as departure and destination to practice instrument approaches. After takeoff when ATC tries to vector you, just request the approach with a transition. You'll be cleared to the transition waypoint and then for the approach.